Monitoring Sync Events works. Had to wait 5 days for it to happen, but
the counter increment corresponds to a loss of sync we had yesterday.
I found this in the AP event log (event of interest in blue):
09/27/2014 : 07:24:19 PDT : : Bridge Core : Loss of sync pulse from
Power Port! No other sync source available.
09/27/2014 : 07:24:23 PDT : : Bridge Core : Acquired sync pulse from
Power Port.
10/02/2014 : 12:21:45 PDT : : Bridge Core : Loss of sync pulse from
Power Port! No other sync source available.
10/02/2014 : 12:21:51 PDT : : Bridge Core : Acquired sync pulse from
Power Port.
We also monitor visible/tracked satellites on that SiteMonitor.
Interestingly, the satellites tracked at about that time was 4 (see
marked up graph below). I suppose it's possible that the tracked
satellites went to zero one minute (or less) after the SNMP poll, but it
seems rather weird.
Correct me if I'm wrong, but I thought the SiteMonitor only needed one
satellite to maintain timing after it acquired a 3D fix?
bp
On 9/29/2014 10:12 PM, Forrest Christian (List Account) via Af wrote:
Yes that value will increment when the injector detects a loss of sync
and also when it's restored.
These are definitely good values to monitor, and I know at least one
customer which does as you suggest and monitors for a non zero value
and resets the value to zero to clear the error.
On Sep 29, 2014 7:23 PM, "Bill Prince via Af" <af@afmug.com
<mailto:af@afmug.com>> wrote:
Yeah. Not sure why I thought the index name was where I would get
the value. The OID that shows in the UI for the Satellites
Visible is:
.1.3.6.1.4.1.32050.2.1.28.2.1
The OID for the actual value is
.1.3.6.1.4.1.32050.2.1.28.5.1
So I was able to fix that part. What I'm wondering is how to know
that We've had a loss in sync. There is something under Binary
I/O called "1PPS Active".
Seeing as we only poll once every 5 minutes, catching that going
to zero seems slim to none. However, I am intrigued by the
"Events" value. Does that increment every time the Syncpipe loses
sync? In which case, I can zero it out, and set a threshold for
whenever it is non-zero (see below).
I may try that.
bp
On 9/29/2014 1:28 PM, Forrest Christian (List Account) via Af wrote:
A little out of order:
On the OID's .. you may have the wrong OID. There is an oid for
the title strings, and an oid for the value. You may want to
check the oid you are using. In addition, on the strings tab,
there *are* strings which list the specific statellite and signal
strength of all of the sats it is receiving a signal from.
One more troubleshooting item is the 'pulse received' counter on
the analog tab. It should increment once and exactly once per
second. I've had good luck comparing this value over a specific
time. I.E. at exactly 10 minutes, there should be exactly 600
more pulses.
As far as fixing it: I'd move the syncpipe, then try a different
one. If a second does the same thing, then we need to look at
what else might be causing it.
If you want to send in screenshots to cust...@packetflux.com
<mailto:cust...@packetflux.com> of the boolean/analog/string tabs
from the sitemonitor, I might be able to see something.
-forrest
On Sep 29, 2014 1:40 PM, "Bill Prince via Af" <af@afmug.com
<mailto:af@afmug.com>> wrote:
One of our many locations where we're using a Packetflux sync
pipe/injector seems to be losing satellite lock once every
few days. Typically it loses it for 2 to 4 seconds, but I've
seen at least once where it went 13 seconds.
I've not been able to get useful information from the
SiteMonitor because the satellites tracked/Visible OIDs are
returning a string with "Sats in View" and "Num Sats Used"
instead of the actual values. (is that a bug or what? This is
on F/W "Jul 29 2012").
However, I'm getting messages like this in the AP logs:
09/21/2014 : 07:49:00 PDT : : Bridge Core : Loss of sync
pulse from Power Port! No other sync source available.
09/21/2014 : 07:49:04 PDT : : Bridge Core : Acquired sync
pulse from Power Port.
09/23/2014 : 18:49:37 PDT : : Bridge Core : Loss of sync
pulse from Power Port! No other sync source available.
09/23/2014 : 18:49:41 PDT : : Bridge Core : Acquired sync
pulse from Power Port.
09/23/2014 : 18:49:55 PDT : : Bridge Core : Loss of sync
pulse from Power Port! No other sync source available.
09/23/2014 : 18:49:59 PDT : : Bridge Core : Acquired sync
pulse from Power Port.
09/24/2014 : 18:47:15 PDT : : Bridge Core : Loss of sync
pulse from Power Port! No other sync source available.
09/24/2014 : 18:47:28 PDT : : Bridge Core : Acquired sync
pulse from Power Port.
09/27/2014 : 07:24:18 PDT : : Bridge Core : Loss of sync
pulse from Power Port! No other sync source available.
09/27/2014 : 07:24:20 PDT : : Bridge Core : Acquired sync
pulse from Power Port.
Not sure what I might do here. This is with all the
equipment up against a concrete wall, so there is only a 180
degree view of the sky. Maybe a little bit less than that
because the wall is not flat, maybe about 170 degree view of
the sky.
The APs are PMP450, and rarely get a GPS lock on the internal
GPS. Maybe I can try moving the sync pipe away from the wall
or something.
--
bp
